Fig. 4. hus1 is not required for the G2-M checkpoint in the developing wing disc. (A-F) Larvae were mock-irradiated or irradiated with 4000 rad and allowed to recover for 1 hour before detection prior to fixation for phosopho-histone H3 staining. (G) Number of mitotic cells in imaginal wing discs. Bars indicate standard deviations in the average number of mitotic cells from at least five wing discs.